Amazon.com description: Product Description: Beavers might not be very large animals, but they can wipe out whole forests. Beavers need certain trees for sustenance and lodging, but that can mean widespread destruction throughout their habitats, including flooding. However, beavers have a positive role to play in nature, too. They allow certain kinds of trees and animals to thrive. Readers will discover many more fun facts about these rodents, such as how their orange teeth are covered in iron. Fact boxes and graphic organizers make this book an even more valuable source of information for animal enthusiasts.